Independently certified 2C resources, assessed by ERC Equipose,  now stand at 36 billion cubic feet. Gross 1C resources stand at 18Bcf and 3C resources totalling 70.6Bcf. 

Operator Vintage holds a 42.5% interest in PRL 211, while Metgasco holds a 21.25% interest, Bridgeport holds another 21.25% and Impress holds the rest. ATP 2021 is shared by Vintage, Metgasco and Bridgeport in a 50-25-25 respective split. 

The Odin-1 exploration well was drilled in May, reporting extensive gas shows in sandstones through the primary target Toolachee and Patchawarra formations, as well as a basal sand in the Epsilon Formation, with samples recovered. 

The well was cased as a gas discovery for flow testing and future production. 

Last month the JV partners announced Vali-3 well hit 178m of net pay across Patchawarra and Tirrawarra formations. 

ERC Equipose certified the 2C booking across the Toolachee, Epsilon, Patchawarra and Tirrawarra formations across both PRL 211 and ATP 2021 on the southern flank of the Nappamerri Trough in the Basin.  

Vintage managing director Neil Gibbins said the booking was an outstanding result. 

"The Odin and Vali gas fields combined constitute a sizeable and potentially scaleable Cooper Basin gas province that we believe will supply significant quantities of gas to the east coast of Australia for at least the next 20 years," he said. 

"We were confident that Odin would over deliver once extensive as shown through a number of target zones were observed, but to have this confirmed and independently certified by ERCE is a massive boost for all concerned."

Metgasco managing director Ken Aitken said the results vindicated the company's bullish expectations and expects more exploration success within both licensees in the future.

"Excellent results from Odin-1 and the appraisal drilling of Vali 2 and 3 provide confidence that both fields should be producing gas into the high price east coast gas market in CY2022 and delivering significant production revenue to Metgasco for decades." 

Aitken said last month the JV is "well advanced" in gas pre-sales and securing infrastructure financing. 

The three were given approval by the Australian Consumer and Competition Commission for joint marketing earlier this year. The ACCC's former estimate of the field was that it could supply some 0.5% of the entire east coast market and that was revised down to 0.2% when LNG exports are factored in. 

Vintage shares are up 3.1% at 6.6c. Metgasco shares are up 4% at 2.6c.